Shaft collar



- G. F. SHAFFER.

Patented Jan. 31, 1922.

2 SHEETS-SHEET 1- WITNESS:

G. F. SHAFFER.

SHAFT COLLAR.

' 1920. I 1,405,342. Patented Jan. 31,1922.

HEETS-SBEET 2.

To all whom it may concern:

rura

' SHAFT COLLAR.

Application filed Jul as,

Be it knownthat I, GEORGE F. Srrarrnn,

a citizen of the United States, residing at York Haven, in the county of York and 5 State of Pennsylvania, have invented new and useful Improvements in Shaft Collars, of which the following is a specification.

7 My present invention has reference to a:

means for applying acollar to a shaft which is already ournaled in upright supports or hangers without necessitating the removal of the shaft from itssupports. I

' In carrying out my invention it is my purpose to produce a flanged sleeve having inner binding elements and outer threads, and which is constructed of sections whereby the, same may be readily arranged around a shaft, and to also provide a sectional collar that may be also arranged around the shaft, the sections of the said collar having their confronting edges provided with co-engagin means and the collar having its bore threaded to permit the same to be screwed over the sleeve, and thus bind the. sleeve against the shaft.

The drawings illustrate a satisfactory embodiment of the improvement 'reducedto practice, and in which Figure 1 is an elevation of a collar or abutment element in accordance with this invention and in applied position.

Figure 2 is a sectional view approximately on the line 22 of Figure 1, and on an enlarged scale. 7 I

Figure 3 is a sectional View approximately on the line 33 of Figure 2.

Figure 4 is a perspective view looking toward the inner face of one of the sleeve sections.

Figure 5 is a perspective view of one of the collar sections. I

Figure 6 is a similar view ofthe cooperating collar section.

Figure 7 is an end view of the sleeve look ing toward the threaded or socket end thereof, and the sections assembled.

In the drawings, the numeral 1 designates a shaft, and 2 the supports on which the shaft is journaled.

My improvement isdesigned either to prevent longitudinal movement of the shaft through its hearings, or to provide abutment or contact members for elements, such as wheels or the like which are positioned on the shaft. Of course, such wheels or pulleys Specification of Letters Patent. I

the numeral 9.

1920. seriarn01-aaz627. j

may be of sectional construction, havingtheir i atentcdgian. 31,1922.

hubs provided with coengagingmeans for holding the sections alignment. I V

Strictly speaking, my improvementcontemplates thenemployment. of a male and a female member, both of which, when assembled provide the collar or abutment, but for the sake of convenience, I will hereinafter refer to one of the members as a sleeve and the other member as a collar. The sleeve is broadly indicated byfthe assembled and in-proper numeral 3,and has one of its'ends provided with an outturned flange 4. The body of'the sleeve, indicated by the numeral 5 preferably has-itsbore slightly flaredand itsouter face or periphery also slightly flared from the flange to the end thereof. The outer periphery of the sleeve isthreaded, as indicated by the numeral 6, and the bore of the said sleeve is provided with substantially rectangular teeth 8 which are'designed to grip the shaft, when the'sleeve is arranged on the shaft. If desired, the sleeve may be constructed of comparatively soft metal, and the said sleeves comprises a. plurality of sections, three being illustratedby the drawings.

It will be noted that the sections of the sleeve may be readily arranged around the shaft and held properly positioned thereon by the person attaching the device to the shaft. The sleeve is engaged by the female member, which I have referred to as the The collar is broadly indicated by The collar has its bore taperedfrom one of its ends to its other end and its said here is threaded, as at 10, to engage with the threaded extension Or body portion of the sleeve 5. The collar 10 00111- prises two sections 11 and 12-respectively, and these sections may be readily arranged collar.

around the shaft. 7 The section 11 has its threaded bore of a less diameter than the threaded bore of the section 12, andfrom the terminal of the threads the said section, on its inner face is formed with longitudinal grooves13 and reduced straight shoulders at the outer ends of the grooves. The section 12, has its outer face, at its ends re duced, and thesaidreduced portion, at the ends of-the said section is formed with out- .wardlyprojecting portions forming tongues 15. The inner walls of the tongues are arranged at an angle, as indicated by the nu meral 16,'and the said tongues are subare also slightly tapered from one end there- V of to the other.

When the sections 11 and 12 are arranged over the shaft they are brought together so that the tongues 15 of the section 12 are received in the grooves 13 of the section 11. The collar, thus assembled, is now screwed onto the threaded portion of the sleeve 5, and incident to the tapered. or threaded bore of the collar and the tapered threaded portion of the sleeve, the sections of the latter will. be compressed against the shaft so that the teeth 8 of the said sections will bind against the said shaft. Because of the tapered coengaging means between the collar sections, the section 11 is prevented from moving longitudinally, in an outward direction over the section 12.

It is thought that the foregoing description, when taken in connection with the drawings will fully set forth the advantages of the construction, the manner in which it is applied to the shaft as well as the simplicity and efficiency of the improvement. Having thus described the invention, What I claim is 2 i A stop or abutment member for a sup ported shaft, comprising a tapered flanged sleeverof comparatively soft metal having its bore provided With transversely arranged substantially rectangular teeth arranged in longitudinal series, and its periphery threaded, said sleeve constituting a plurality of sections adapted to be arranged around the shaft, and a collar having a tapered threaded bore to engage with the threaded sleeve, said collar comprising a plurality of sections whereby the same may be arranged around the shaft, one of the sections having tapered tongues, the other section having tapered grooves to receive the tongues, and said collar when'screwed on the: sleeve designed to compress the sections of the latter and the teeth substantially V-shaped in cross section thereon against the shaft, whereby to lock the sleeve and'eollar on the shaft.

In testimony whereof I'aflix my signature.

GEORGE F. SHAFFER. 

